Treatment for oily process water

Emulsions with cooling lubricants typically occur in the following oily process waters:

• general metalworking/processing for heat dissipation and friction reduction
• mechanical processing in the automotive/space industry
• waste disposal

The use of KLC vacuum evaporator significantly extends the lifetime of the bath. The purified distillate is fed back into the bath circuit and saves fresh water additionally.

The die casting process is mainly used in metal machining/processing and in the automotive/space industry.

The release agent used serves, among other things, to improve the surface structure of the manufactured parts and to prevent metal residues.

Crack testing is one of the non-destructive material tests.

This test method is used:

• in metal working/processing
• in the automotive/space industry

It is used to make cracks in the surface visible by the dye penetrant method.

In surface technology, thorough cleaning is a prerequisite for optimum painting results.

During the degreasing of surfaces, oily process water is produced. The rinsing water quality is of decisive importance for the cleanliness of the surface to be coated and subsequently for the quality of the subsequent surface coating.

Parts cleaning and degreasing are not only used in surface technology. In principle, they are used in all industries.

Oily process water is generated:

• during maintenance and repair in the automotive and aerospace industries
• in the cleaning of production plants
• in end products of the pharmaceutical, chemical or food industry

Hardening is used to increase the mechanical resistance of ferrous materials. This is achieved by heat treatment and rapid cooling (quenching) of the workpiece.

Baths with oil or oil-water mixtures are often used as cooling medium. After hardening, the workpieces are cleaned for the subsequent process steps.

Here, rinsing water quality is of decisive importance for the cleanliness and quality of the surface to be coated.

Before maintenance, repair or overhauling of maintenance and wear parts of commercial vehicles such as aircraft, locomotives/train cars and trucks, they must be cleaned beforehand.

The process water produced is usually oily due to the use of lubricants in the operation of the parts to be maintained, such as gearboxes and axles. The cleaning process optimally prepares the components for subsequent processes such as crack detection, mechanical machining and surface treatment.

All industrial sectors generate used containers that can ideally be reused or disposed of cleaned after a rinsing process.

These include:

• transport containers
• drums
• reusable packaging
• KLTs (small load carriers)

In addition to cleaning agents, the process waters also contain small quantities of the transported ingredients of any kind. KLC vacuum technology ensures cost-effective and efficient process water treatment.

The aim is to return the cleaned process water to the rinsing circuit. In the process, the amount of concentrate to be disposed of is reduced to a minimum. Significant amounts of fresh water can be saved via distillate reuse.

In numerous areas of metal working and processing, washing and cleaning steps are necessary in preparation for subsequent production steps.

This includes, for example, the cleaning of:

• gearbox and engine components
• clutch housings and chassis components
• parts of rail vehicles
• white goods parts

A challenge in parts cleaning is not only the geometry of the parts to be cleaned but also the choice of the right cleaning agent. These oily process waters are treated efficiently and safely using KLC vacuum evaporator technology.